Github user uce commented on a diff in the pull request:
https://github.com/apache/flink/pull/3128#discussion_r97315450
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/metrics/dump/MetricDumpSerialization.java
---
@@ -64,122 +80,148 @@ private MetricDumpSerialization() {
* @param gauges gauges to serialize
* @param histograms histograms to serialize
* @return byte array containing the serialized metrics
- * @throws IOException
*/
- public byte[] serialize(
+ public MetricSerializationResult serialize(
Map<Counter, Tuple2<QueryScopeInfo, String>> counters,
Map<Gauge<?>, Tuple2<QueryScopeInfo, String>> gauges,
Map<Histogram, Tuple2<QueryScopeInfo, String>>
histograms,
- Map<Meter, Tuple2<QueryScopeInfo, String>> meters)
throws IOException {
-
- baos.reset();
- dos.writeInt(counters.size());
- dos.writeInt(gauges.size());
- dos.writeInt(histograms.size());
- dos.writeInt(meters.size());
+ Map<Meter, Tuple2<QueryScopeInfo, String>> meters) {
+
+ buffer.clear();
+ int numCounters = 0;
for (Map.Entry<Counter, Tuple2<QueryScopeInfo, String>>
entry : counters.entrySet()) {
- serializeMetricInfo(dos, entry.getValue().f0);
- serializeString(dos, entry.getValue().f1);
- serializeCounter(dos, entry.getKey());
+ try {
+ serializeCounter(buffer,
entry.getValue().f0, entry.getValue().f1, entry.getKey());
+ numCounters++;
+ } catch (Exception e) {
+ LOG.warn("Failed to serialize
counter.", e);
+ }
}
+ int numGauges = 0;
for (Map.Entry<Gauge<?>, Tuple2<QueryScopeInfo,
String>> entry : gauges.entrySet()) {
- serializeMetricInfo(dos, entry.getValue().f0);
- serializeString(dos, entry.getValue().f1);
- serializeGauge(dos, entry.getKey());
+ try {
+ serializeGauge(buffer,
entry.getValue().f0, entry.getValue().f1, entry.getKey());
+ numGauges++;
+ } catch (Exception e) {
+ LOG.warn("Failed to serialize gauge.",
e);
+ }
}
+ int numHistograms = 0;
for (Map.Entry<Histogram, Tuple2<QueryScopeInfo,
String>> entry : histograms.entrySet()) {
- serializeMetricInfo(dos, entry.getValue().f0);
- serializeString(dos, entry.getValue().f1);
- serializeHistogram(dos, entry.getKey());
+ try {
+ serializeHistogram(buffer,
entry.getValue().f0, entry.getValue().f1, entry.getKey());
+ numHistograms++;
+ } catch (Exception e) {
+ LOG.warn("Failed to serialize
histogram.", e);
+ }
}
+ int numMeters = 0;
for (Map.Entry<Meter, Tuple2<QueryScopeInfo, String>>
entry : meters.entrySet()) {
- serializeMetricInfo(dos, entry.getValue().f0);
- serializeString(dos, entry.getValue().f1);
- serializeMeter(dos, entry.getKey());
+ try {
+ serializeMeter(buffer,
entry.getValue().f0, entry.getValue().f1, entry.getKey());
+ numMeters++;
+ } catch (Exception e) {
+ LOG.warn("Failed to serialize meter.",
e);
+ }
}
- return baos.toByteArray();
+ return new
MetricSerializationResult(buffer.getCopyOfBuffer(), numCounters, numGauges,
numMeters, numHistograms);
--- End diff --
Empty line before return?
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